Reaction Rates Quiz

What is the initial concentration of NH3 in the given problem?

• 6 M

• 2 M

• 8 M

• 4 M

Which of the following best describes the rate equation for a reaction?

• Rate is the sum of concentrations over time.

• Rate is the difference in time over concentration.

• Rate is the change in concentration over time.

• Rate is the product of concentrations over time.

Why is it important to balance a chemical equation before calculating reaction rates?

• To ensure the reaction is spontaneous.

• To find the temperature of the reaction.

• To make sure the rate equation is applicable.

• To determine the color of the reactants.

What is the balanced coefficient for NH3 in the given reaction?

• 4

• 2

• 1

• 3

How is the change in concentration of NH3 calculated?

• Initial concentration minus final concentration

• Final concentration minus initial concentration

• Sum of initial and final concentrations

• Product of initial and final concentrations

What is the time interval given for the reaction?

• 15 seconds

• 10 seconds

• 20 seconds

• 5 seconds

What is the calculated average reaction rate for NH3?

• 0.01 M/s

• 0.02 M/s

• 0.03 M/s

• 0.04 M/s

Why is the change in concentration of NH3 negative?

• Because NH3 is a product.

• Because NH3 is a catalyst.

• Because NH3 is a reactant being consumed.

• Because NH3 is at equilibrium.

What are the units of the reaction rate?

• Liters per mole

• Moles per liter

• Moles per second

• Molar per second

Which of the following is an equivalent expression for molar per second?

• Moles liters to the minus one seconds to the minus one

• Liters moles to the minus one seconds to the minus one

• Moles seconds to the minus one liters to the minus one

• Liters seconds to the minus one moles to the minus one